SIR the Label Astrid Open Back Mini Dress in Tisso Plum
The SIR the Label Astrid Open Back Mini Dress in Tisso Plum comes from SIR. (Separates, Intimates, Ready-to-wear), the Australian label founded in 2014 by Nikki Campbell and Sophie Coote. Coveti stocks it as part of our Mini Dresses edit, and every piece is checked for authenticity before it leaves us.
The Astrid Open Back Mini Dress is cut in breathable lightweight silk viscose fabrication and finished in tisso plum. Look for the halter mini dress and cowl through neckline. It works for dinner in town and a gallery opening.
Quick Facts
- Brand: SIR the Label, Australia, founded in 2014 by Nikki Campbell and Sophie Coote, flagship store in Bondi, Sydney
- Product: Astrid Open Back Mini Dress in Tisso Plum
- Collection: Pre-Fall 2026
- Colour: Multicolour
- Material: Main 30% silk, 70% viscose. Lining 100% polyester
- Size and fit: Fits true to size, select your normal size. SIR sizes 0 to 4 are shown here as UK 6 to 14 (size 0P, the petite cut, as UK 4). The model is 178 cm tall and wears SIR size 1.
- Origin: designed in Australia
- Authenticity: 100% authentic SIR the Label, verified by Coveti
- Delivery and returns: the terms for your country are in the Coveti logistics and returns protocol

How to Wear the Astrid Open Back Mini Dress in Tisso Plum
Wear the Astrid Open Back Mini Dress with a slim belt and gold jewellery. For a different look, try a tailored blazer over the shoulders.
Good for dinner in town and a gallery opening. For more ideas, browse the full SIR the Label edit.
PRODUCT DETAILS
| Brand | SIR the Label, Australia |
| Category | Mini Dresses |
| Colour | Multicolour |
| Material | Main 30% silk, 70% viscose. Lining 100% polyester |
| Size and fit | Fits true to size, select your normal size. SIR sizes 0 to 4 are shown here as UK 6 to 14 (size 0P, the petite cut, as UK 4). The model is 178 cm tall and wears SIR size 1. |
| Care | Dry clean only, do not bleach, do not tumble dry, cool iron. |
| Origin | designed in Australia |
| Style code | SIR-ASTRID-OPEN-BACK-MINI-DRESS-TISSO-PLUM |
About SIR the Label
SIR the Label is an Australian label founded in 2014 by Nikki Campbell and Sophie Coote. The name stands for Separates, Intimates, Ready-to-wear, and the house now has a flagship in Bondi and stores in Sydney, Melbourne, Brisbane and Perth. Its look is relaxed and grown up: silk slip dresses and bias gowns, linen and cotton for summer, sharp tailoring in wool suiting, fine knits and a swimwear line built on prints that run through the whole collection. SIR designs to its own 0 to 4 sizing, which Coveti shows on the UK ladder so you can choose with confidence.
“This is SIR at its best: an easy mini dress with a sharp line.”
Gemma Deeks, Fashion Editor at Coveti
How SIR the Label Compares
Shoppers looking at SIR the Label often also consider
Posse,
Christopher Esber and
Aje from Australia, and
Toteme for the same pared back mood.
Frequently Asked Questions
Is the SIR the Label Astrid Open Back Mini Dress in Tisso Plum authentic?
Yes. Every SIR the Label piece sold by Coveti is 100% authentic and is checked before dispatch.
What size should I order in the Astrid Open Back Mini Dress in Tisso Plum?
SIR says it fits true to size, so order your usual size. SIR 0 equals UK 6, SIR 1 equals UK 8, SIR 2 equals UK 10, SIR 3 equals UK 12 and SIR 4 equals UK 14.
What is the Astrid Open Back Mini Dress in Tisso Plum made of?
The Astrid Open Back Mini Dress in Tisso Plum is made of Main 30% silk, 70% viscose. Lining 100% polyester.
How do I care for the Astrid Open Back Mini Dress in Tisso Plum?
Dry clean only, do not bleach, do not tumble dry, cool iron.
Where is SIR the Label from?
SIR the Label is an Australian label with its flagship store in Bondi, Sydney. This piece: designed in Australia.
Who founded SIR the Label?
Nikki Campbell and Sophie Coote founded SIR. in 2014. The name stands for Separates, Intimates, Ready-to-wear. The label is known for silk dresses, easy tailoring, linen and swimwear with a relaxed Australian line.
How does delivery work?
Delivery options, duties and returns depend on your country. The full terms are in the Coveti logistics and returns protocol.
More from SIR the Label at Coveti
Last updated 13-Oct-26 | Curated and authenticated by Coveti























